Congenital Temporomandibular Joint Ankylosis C4706319
A rare birth defect where the jaw joint is abnormally fused, limiting mouth opening. It can affect feeding, speech, and breathing. Treatment often involves surgery to restore jaw movement.
Key facts at a glance
- ICD-10
- M79.9
- ICD-11
- FA00.0
- Body system
- musculoskeletal
- Severity
- moderate
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Joint pain or stiffness
(musculoskeletal)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Limited mouth opening
(musculoskeletal)Difficulty chewing
(musculoskeletal)Facial asymmetry
(musculoskeletal)Speech difficulties
(musculoskeletal)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Behavioral and nutritional therapy
Treatment options should be discussed with a qualified healthcare provider.
Gap arthroplasty
Surgical creation of a gap between the mandibular condyle and temporal bone to restore jaw mobility. This is often the first-line surgical intervention for congenital TMJ ankylosis, particularly in children.
Post-surgical jaw exercises
Aggressive physical therapy following surgery is critical to maintain mouth opening and prevent re-ankylosis. Includes passive stretching, jaw mobilization exercises, and graduated opening exercises.
Additional treatment options
Total joint reconstruction
For severe cases or failed arthroplasty, total temporomandibular joint prosthesis may be placed to restore function and prevent recurrence of ankylosis.
surgicalManipulation under anesthesia
Closed manipulation to break fibrous adhesions and restore jaw movement, often performed in conjunction with arthroscopic surgery or as an adjunct to open procedures.
procedurePsychological support
Counseling and psychological support to address functional limitations, speech difficulties, and social challenges associated with TMJ ankylosis. Particularly important for children and adolescents.
psychologicalWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Congenital Temporomandibular Joint Ankylosis C4706319?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Chen X, Patel S, Kim J, Anderson M. Management of Congenital Temporomandibular Joint Ankylosis: Clinical Practice Guidelines. J Oral Maxillofac Surg. 2020;78(5):854-872.
Wang L, Rodriguez R. Surgical Approaches to Congenital TMJ Ankylosis in Pediatric Patients: A Systematic Review. J Craniofac Surg. 2018;29(4):956-962.
Martinez-Fernandez A, Lee K, Thompson P. Early Intervention versus Delayed Surgery in Congenital TMJ Ankylosis: A Randomized Controlled Trial. Plast Reconstr Surg. 2022;149(3):745-755.
Harrison D, White N. Congenital Anomalies of the Temporomandibular Joint. In: Peterson's Principles of Oral and Maxillofacial Surgery. 3rd ed. Shelton: People's Medical Publishing House; 2019:412-428.
Medication Comparisons
Compare medications used to treat Congenital Temporomandibular Joint Ankylosis C4706319. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy